MESON Chess Problem Database
Problem Display
PID: 190434 (1Qb5/B3p3/2Rn2p1/4kPP1/1n5N/1B1p1K2/3Np3/1R6 w - - 0 1)
Hoek, Willem
Schweizerische Schachzeitung, 1983
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Bxf5
- 2.Qh8#
- 1...Ba6
- 2.Qh8#
- 1...Be6
- 2.Qh8#
- 1...Bb7
- 2.Qh8#
- 1...Bd7
- 2.Qh8#
- 1...Sd5
- 2.Sc4#
- 1...e1Q
- 2.Rxe1#
- 1...e1S+
- 2.Rxe1#
- 1...e1B
- 2.Rxe1#
- 1...e1R
- 2.Rxe1#
- 1...gxf5
- 2.Sg6#
- 1...e6
- 2.Qxd6#
- 1...Bxf5
- Tries
- 1.Bc4?
- 1...e1S+
- 2.Rxe1#
- 1...Bxf5
- 2.Qh8#
- 1...Sxc6
- 2.Rb5#
- 1...gxf5
- 2.Sg6#
- 1...e1Q
- 2.Rxe1#
- 1...e1B
- 2.Rxe1#
- 1...e1R
- 2.Rxe1#
- 1...Ba6
- 2.Qh8#
- 1...Be6
- 2.Qh8#
- 1...Bb7
- 2.Qh8#
- 1...Bd7
- 2.Qh8#
- 1...Sa2
- 2.Rb5#
- 1...Sc2
- 2.Rb5#
- 1...Sa6
- 2.Qb2#
- 1...e6
- 2.Qxd6#
- 1...Sd5!
- 1...e1S+
- 1.Bf7?
- threat
- 2.Sc4#
- 1...e1S+
- 2.Rxe1#
- 1...e6
- 2.Qxd6#
- 1...Ba6
- 2.Qh8#
- 1...Be6!
- threat
- 1.Rc5+?
- 1...Sd5
- 2.Rxd5#
- 1...Kd4!
- 1...Sd5
- 1.Rxd6?
- threat
- 2.Sc4#
- 2.Bd4#
- 2.Rxd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rc6#
- 2.Re6#
- 2.Rf6#
- 2.Rxg6#
- 2.Rd7#
- 2.Rd8#
- 1...Bb7+
- 2.Rd5#
- 2.Rc6#
- 1...e1S+
- 2.Rxe1#
- 1...Bxf5
- 2.Sc4#
- 2.Bd4#
- 2.Rxd3#
- 2.Rd4#
- 2.Ra6#
- 2.Rc6#
- 2.Re6#
- 2.Rf6#
- 2.Rxg6#
- 2.Rd7#
- 2.Rd8#
- 1...gxf5
- 2.Sc4#
- 2.Sg6#
- 2.Bd4#
- 2.Rxd3#
- 2.Rd4#
- 2.Ra6#
- 2.Rc6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rd7#
- 2.Rd8#
- 1...Sa6
- 2.Sc4#
- 2.Bd4#
- 2.Rd5#
- 2.Rxa6#
- 2.Re6#
- 1...Ba6
- 2.Bd4#
- 2.Rxd3#
- 2.Rd4#
- 2.Rd5#
- 2.Rxa6#
- 2.Rc6#
- 2.Re6#
- 2.Rf6#
- 2.Rxg6#
- 2.Rd7#
- 2.Rd8#
- 1...Be6
- 2.Bd4#
- 2.Rxd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rc6#
- 2.Rxe6#
- 2.Rd7#
- 2.Rd8#
- 1...Bd7
- 2.Sc4#
- 2.Bd4#
- 2.Rxd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rc6#
- 2.Re6#
- 2.Rf6#
- 2.Rxg6#
- 2.Rxd7#
- 1...Sc2
- 2.Sc4#
- 2.Rxd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rc6#
- 2.Re6#
- 2.Rf6#
- 2.Rxg6#
- 2.Rd7#
- 2.Rd8#
- 1...Sd5
- 2.Sc4#
- 2.Rxd5#
- 2.Re6#
- 1...Sc6
- 2.Sc4#
- 2.Rd5#
- 2.Rxc6#
- 2.Re6#
- 1...e6
- 2.Sc4#
- 2.Bd4#
- 2.Rxd3#
- 2.Rd4#
- 2.Rd5#
- 2.Ra6#
- 2.Rc6#
- 2.Rxe6#
- 2.Rd7#
- 2.Rd8#
- 1...exd6!
- threat
- 1.Qxb4?
- threat
- 2.Bd4#
- 2.Rc5#
- 2.Qc3#
- 2.Qc5#
- 2.Qd4#
- 2.Qf4#
- 1...Sxf5
- 2.Sxg6#
- 2.Qa5#
- 2.Qc5#
- 2.Qe4#
- 2.Qf4#
- 2.Qb5#
- 1...Sc4
- 2.Qc5#
- 2.Qb5#
- 1...Be6
- 2.Bd4#
- 2.Qc3#
- 2.Qd4#
- 2.Qf4#
- 1...Bb7
- 2.Bd4#
- 2.Qc3#
- 2.Qc5#
- 2.Qd4#
- 2.Qf4#
- 1...Se4
- 2.Bd4#
- 2.Qd4#
- 2.Qxe4#
- 1...Sb5
- 2.Qc5#
- 2.Qe4#
- 2.Qf4#
- 2.Qxb5#
- 1...Sb7
- 2.Bd4#
- 2.Qc3#
- 2.Qd4#
- 2.Qe4#
- 2.Qf4#
- 1...Sf7
- 2.Bd4#
- 2.Qc3#
- 2.Qa5#
- 2.Qc5#
- 2.Qd4#
- 2.Qe4#
- 2.Qf4#
- 2.Qb5#
- 1...Se8
- 2.Bd4#
- 2.Qc3#
- 2.Qa5#
- 2.Qc5#
- 2.Qd4#
- 2.Qe4#
- 2.Qf4#
- 2.Qb5#
- 1...e1S+!
- threat
- 1.Qb5+?
- 1...Sd5
- 2.Qxd5#
- 1...Sxb5!
- 1...Sd5
- 1.Qb6?
- threat
- 2.Qd4#
- 1...Sxc6
- 2.Qc5#
- 1...Sxf5
- 2.Sxg6#
- 1...Sc2
- 2.Qc5#
- 1...Sb5
- 2.Qe3#
- 1...e1S+!
- threat
- 1.Qxc8?
- threat
- 2.Sxg6#
- 2.Qe6#
- 2.Qh8#
- 1...Sxf5
- 2.Sxg6#
- 2.Re6#
- 2.Qe6#
- 1...Sxc8
- 2.Re6#
- 1...gxf5
- 2.Sg6#
- 2.Qe6#
- 2.Qh8#
- 1...Sc4
- 2.Qe6#
- 1...Sd5
- 2.Sxg6#
- 2.Qe6#
- 1...Se4
- 2.Sxg6#
- 2.Re6#
- 2.Qe6#
- 1...Sf7
- 2.Sxg6#
- 2.Re6#
- 2.Qe6#
- 1...Se8
- 2.Sxg6#
- 2.Re6#
- 2.Qe6#
- 1...e6
- 2.Qxe6#
- 2.Qh8#
- 1...e1S+!
- threat
- 1.Bc4?
- Keys
- 1.Ba2!
- 1...e1S+
- 2.Rxe1#
- 1...Bxf5
- 2.Qh8#
- 1...Sxa2
- 2.Rb5#
- 1...Sxc6
- 2.Rb5#
- 1...gxf5
- 2.Sg6#
- 1...e1Q
- 2.Rxe1#
- 1...e1B
- 2.Rxe1#
- 1...e1R
- 2.Rxe1#
- 1...Ba6
- 2.Qh8#
- 1...Be6
- 2.Qh8#
- 1...Bb7
- 2.Qh8#
- 1...Bd7
- 2.Qh8#
- 1...Sc2
- 2.Rb5#
- 1...Sd5
- 2.Sc4#
- 1...Sa6
- 2.Qb2#
- 1...e6
- 2.Qxd6#
- 1...e1S+
- 1.Ba2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- B(h);OGATE,XP(F)::QAB(J)
- B(h);OGATE::QAB(J)
- B(h);OGATE,P_PINR(H)::QAB(J)
- S(c);SBLOCK::S(B)
- P(a);OGATEB::R(A),XQ(a)
- P(a);CHECK,OGATEB::R(A),XS(a)
- P(a);OGATEB::R(A),XB(a)
- P(a);OGATEB::R(A),XR(a)
- P(f);SBLOCK,XP(F)::S(E)
- P(g);N_GUARD::QAB1(J),XS(e)
- Tries
- Try
- B(C);
- Vars
- P(a);CHECK,OGATEB::R(A),XS(a)
- B(h);OGATE,XP(F)::QAB(J)
- S(c);OGATE,XR(H)::R(A)
- P(f);SBLOCK,XP(F)::S(E)
- P(a);OGATEB::R(A),XQ(a)
- P(a);OGATEB::R(A),XB(a)
- P(a);OGATEB::R(A),XR(a)
- B(h);OGATE::QAB(J)
- B(h);OGATE,P_PINR(H)::QAB(J)
- S(c);OGATE::R(A)
- S(c);OGATE::QAB(J)
- P(g);N_GUARD::QAB1(J),XS(e)
- Refutation
- S(c);
- Try
- B(C);
- Threat
- S(B)
- Vars
- P(a);CHECK,OGATEB::R(A),XS(a)
- P(g);N_GUARD::QAB1(J),XS(e)
- B(h);OGATE::QAB(J)
- Refutation
- B(h);
- Try
- R(H);CHECK
- Vars
- S(c);N_GUARD,N_SPINS(e),P_SPINS(c)::R1(H),XS(c)
- Refutation
- K(d);N_SPINS(e),S_FLIGHT
- Try
- R(H);XS(e)
- Threat
- DUALS(12)
- Vars
- P(a);CHECK,OGATEB::R(A),XS(a)
- Refutation
- P(g);P_SPINP(g),XR(H)
- Try
- Q(J);N_PINS(e),XS(c)
- Threat
- DUALS(6)
- Refutation
- P(a);CHECK
- Try
- Q(J);CHECK,N_PINS(e)
- Vars
- S(c);N_GUARD,P_SPINS(c)::QAR1(J),XS(c)
- Refutation
- S(e);XQ(J)
- Try
- Q(J);N_PINS(e)
- Threat
- QAB1(J)
- Vars
- S(c);N_GUARD,XR(H)::QAR2(J)
- S(e);SBLOCK,XP(F)::S(E),XP(f)
- S(c);N_GUARD::QAR2(J)
- S(e);N_GUARD::QAR2(J)
- Refutation
- P(a);CHECK
- Try
- Q(J);N_PINS(e),XB(h)
- Threat
- DUALS(3)
- Vars
- S(e);OGATE,XQ(J)::R1(H)
- S(e);::QAR1(J)
- Refutation
- P(a);CHECK
- Try
- Actual
- B(C);
- Vars
- P(a);CHECK,OGATEB::R(A),XS(a)
- B(h);OGATE,XP(F)::QAB(J)
- S(c);OGATE,XB(C)::R(A)
- S(c);OGATE,XR(H)::R(A)
- P(f);SBLOCK,XP(F)::S(E)
- P(a);OGATEB::R(A),XQ(a)
- P(a);OGATEB::R(A),XB(a)
- P(a);OGATEB::R(A),XR(a)
- B(h);OGATE::QAB(J)
- B(h);OGATE,P_PINR(H)::QAB(J)
- S(c);OGATE::R(A)
- S(c);SBLOCK::S(B)
- S(c);OGATE::QAB(J)
- P(g);N_GUARD::QAB1(J),XS(e)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).